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110.414.891. Patented Nov. 12, 1889.

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N. PETERS, Pholo-Llihogmphor. Wuhngon. D. C.

UNITED STATES PATENT OFFICE.`

CHARLES V. ROTE', OF LANCASTER, PENNSYLVANIA, ASSIGNOR OF SEVEN- TEENTWENTY-FOURTHS' TO BERNARD J. MCGRANN AND EUGENE G.

SMITH, OF SAME PLACE.

CAR-BRAKE.

SPECIFIGAYTION forming part of Letters Patent No. 414,891, datedNovember 12, 188 9.

- Application filed March 28, 1889. Serial No. 305,069. (No model.)

. citizen of the United States, and a resident of Lancaster, county ofLancaster, and State of Pennsylvania, have invented a new and usefulImprovement in Car-Brakes, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,making part of this specification.

My invention relates to a novel arrangement of brake-levers and theirconnectingrods in connection with the brake-shoes and the power forapplying the latter whereby such power is more fully utilized inapplying the brakes.

In the ordinary application of steam-power or atmospheric pressure forthe application of the brake-shoes to the wheels a large part of suchpower is wasted or lost through the supposed necessity heretoforeexist-in g of con'-` necting one arm of the lever with a fixed point onthe truck-frame, and, supposing such fixed point to be at one end-of thelever and forming the fulcrum therefor, the power to be applied to thelever centrally of its length for moving, and the brake-rod l'to bemoved to be attached to the other or swinging end of the lever, it willreadily be seen that the power applied will be divided between thebrake-rod to be moved and the fixed point on the frame, at which latterpoint it accomplishes nothing but to afford a point on which the levercan be vibrated, the power or pull applied thereto being otherwise lostor wasted. I propose to remedy this difficulty by making the lever towhich the power is applied a floating lever and connecting both itsends, through suitable rods and lever or levers, with the brake beams orshoes in such manner that all the power exerted, except such loss as maybe due to friction of the parts, shall be utilized for apylying thebrakes, as hereinafter described and claimed.

In the accompanying drawings, Figure lis a plan view of a car-truck withmy improvements applied in the form they would assume when brake-shoesare applied on one, (the outer) side only of the wheels; and Fig. 2 is asimilar view showing the arrangement of brake-levers, &c., for applyingthe brakeshoes to both sides of the same'wheels.

Referring first to Fig. l as showing the simpler arrangement of parts, AA indicate longitudinal bars of the truck-frame; A2 and A3, transversebars thereof, the last-named bars A3 A3 giving support to the bolster,through which connection is made with the car-body in any usual manner.

B is a lever to which at or near the center of its length a rod bispivoted, said rod at its opposite end connecting with the piston of asteam 0r air cylinder, or with other suitable motor from which the powerfor applying the brakes is derived, in any usual or preferred manner. Toone end of the lever B is connected one end of a rod c, which at itsopposite end connects through achain c with the shaft of a hand-wheel C,which may be operated in the usual manner for applying the brakes byhand, said shaft and the chain and rod connected therewith forming, inthe ordinary arrangement of these parts, the iiXedpoint or fulcrurn onthe frame on which the lever B is vibrated. The opposite end of thelever B has connected toit one end of a rod d, which at its opposite endis connected to the upper long arm of a lever D, which is fulcrumed in aswiveling yoke or bracket e, secured in the brake-beam E, the upper armof which moves in a guiding-loop F, secured to the truck-frame.

The lower short arm of the lever D has one end of a rod d' connected toit, said rod extending under the bars A3, and being connected to thelower end of a second lever D',

pivoted in a swiveling yoke attached to the brake-beam E. The upper armof lever D passes through a guiding-loop F', in which it yis held at anydesired adjustment by means of a pin passed through any one of a seriesof perforations f in said guiding-loop.

The lconstruction and arrangement of parts thus far described aresimilar to such as are in common use, and in operation whenever the rodb, which connects with the steam or other power for operating thebrakes, as stated, is drawn outwardit vibrates the lever B on its fixedfulcrum or point of attachment to the rod and chain c and c', which areheld taut for that purpose by the hand-wheel shaft to which the chain isattached, and, the power being applied at the center of the length ofsaid lever B, it will readily be seen that of each pound of powerapplied to vibrate said lever one half of said power will be utilized tooperate the brakes, while the remaining half will be exerted in a directpull on the lever fulcrum or rod c, and thence on the hand-wheel shaftor other point of attachment of the lever and thus lost or wasted.

It is the object of my invention to utilize this lost or wasted power,and to this end, while I use the arrangement of levers and rodsdescribed, I leave slack in the chain c', as indicated at c2, when thehand-wheel C is not in use without preventing or interfering with theuse of said hand-wheel for applying the brakes when required, andthereby leaving the lever B free to movebodily, so far as the rod c isconcerned, and making it constitute what I term a floating lever. To thesame end of the leverB to which the rod c is connected I attach theouter end of a second rod g, which at its inner end is connected througha chain g' with one end of a lever G, pivoted at or near the center ofits length in one end of the transverse bars A3 or to any other suitablesupport on the truck-frame. The opposite end ofthe lever G has one endof a rod h connected with it, the opposite end of said rod beingb'ifurcated and having its fork-arms h' liattened and perforated atfrequent intervals in their length to receive a through-pin h2, securingitV to the upper end of thebrake-lever D. The chain g' permits relativemovement between the connected ends of levers G and B for adapting thelever B to be operated from the hand-wheel when required, and theperforations in the forked end h' of the rod 7L permit the adjustment ofthe lever D' and the pin h2 to take up any unnecessary slack in thebrake-connections.

The pin in the guide-loop F', (indicated at 5o f-,) instead of passingthrough a slot in lever D', as usual, is inserted behind or outside ofsaid lever, thereby not only leaving said lever free to rise and fall inthe guiding-loop, but also free to be drawn inward when acted upon bythe lever G, said pin being adjusted to prevent unnecessary play of thelever D.

The operation of the parts last above described will readily beunderstood. The end of the lever B to which the rod c is connected beingleft free to move outward by the slack in chain c', when power isapplied to the rod b the movement of the said end and the power appliedthereto is transferred, through the rod and chain g g', to the lever G,thence to the lever D', and through the connection of the latter withthe lever D,

and said levers D and D' being connected with the brake-beams, asexplained, all the power applied to the rod b is utilized for theapplication of the brakes, instead of one-half only, as in the ordinaryarrangement of the brake rods and levers.

In Fig. 2 my improvement is shown applied to a truck adapted to receivebrakeshoes on the inner adjacent sides of the truckwheels as well as onthe outer sides thereof, the parts in said figure, so far as theycorrespend with the parts of Fig. l described, being indicated by thesame letters.

E2 and E3 indicate the brake-beams (broken away) to which the innershoes are applied; G, the supplemental lever, applied in this instanceto the opposite end of the truck from lever B, (instead of at the centerthereof,) and D2 D3 the brake-levers connected to the intermediatebrake-beams E2 and E3. The levers B and G have each upon their free endsa sheave or grooved pulley b2 or g2, and the'connection between thelevers B and G, instead of being direct by means of arod h, as abovedescribed, is made through rods t' t" and an interposed chain 2, thelatter passing around the sheave b2 and connecting the rods z' and t',the former connecting with the brake-lever D and the latter with thelever D3, as shown. The brake-lever D' is connected with the brake-leverD2 by a similar arrangement of rods jj' and chain j?, the latter passingaround the pulley g2 on the lever G. By this arrangement it will be seenthat when the rod b is drawn outward its power will be expended, throughthe levers B and G and the connections described, upon the levers D, D',D2, and D3, and will all be utilized in the application of the brakes toboth the outer and inner faces of the wheels. It will also be readilyunderstood that the arrangement of the several levers and theirconnections can be varied to suit the arrangement of the brake-shoesrelative to the wheels and to each other without departing from myinvention.

Having now described my invention, I claim as new- 1. The combination,with the floating lever B and the brake-levers connected therewith, ofthe supplemental lever connected to said floating lever and also to thebrake-levers, substantially as described.

2. The combination of the floating lever B, the lever G, connectedtherewith, and the brake-levers D and D', connected to the brakebeams,to each other, and to the levers B and G, substantially as described.

3. The combination, in a power-actuated brake mechanism, of theiloatinglever B, the brake-levers D, D', D2, and D3, the supplementallever G, connected with said lever B and the brake-levers, and theinterposed connections between said levers B and G and the brake-levers,all substantially as described.

4. The combination of the floating lever B IOO IIO

and the supplemental lever connected there- In testimony whereof I haveherennto set with, said levers carrying the sheaves b2 and my hand this25th day of Mal-oh, A. D. 1889. 1o

g2, the connection between said oating level` and the hand-Wheel shaft,the brake-levers CHARLES V. ROTE. D, D', D2, and D3, and the connectionsbetween said brake-levers and the floating and Witnesses:

supplemental levers, all substantially as and I. C. ARNOLD,

for the punpose described.

C. REsE GABY.

